For the leftover takers, "Simply fire up LeftoverSwap, view the available leftovers around you, make your selection, and arrange for pick-up or delivery. Your cheap, local, and community-oriented meal is waiting." For the leftover givers, "You hate the idea of throwing out food, but also don't want to be eating the same leftovers for the next few days. We understand... Snap a picture of what you can't eat, name it, and share the rest of your meal. Your neighbors are hungry."

The concept itself sounds good, and it's not explicit about whether or not you're actually selling your food, or just giving it away. But as SFist points out, there are a slew of health problems that could occur if this is monetized, as well as fraud, like somebody trying to pass off Grand Sichuan as Mission Chinese for unsuspecting newbies. Still delicious, but we imagine the giver might just make a profit.

LeftoverSwap is still in development, but sign up on their websitefor the first tidbits of news.